Cooler for RAID LSI9266-8i/LSI9286-8e

Two simple coolers with 4015 radial fans for RAID controllers in 2U server. Temperatures in this server (Supermicro 2U case) is on acceptable levels (with acceptable noise) around 35C but this two controllers getting bit hot all time at 70-80C, with this coolers I lower temperature to about 50C, now I waiting for another 4015 fans with higher RPM and CFM and I suppose that temperature will go down again a bit.

NOTE: this is working prototype which is actually tested in real conditions, maybe some tweaks come in future.